Implement hitch



July 23, 1929. w. s. GRAHAM IBIPLEKENT BITCH Filed Jan. 24, 1927 2 Sheets-Sheet July 23, 1929. w. s. GRAHAM 1,721,694

IMPLEMENT HITCH Filed Jan. 24, 1927 2 Sheets-Sheet 2 mais my 23, 1929. 1,721,694

UNlTi-:DSTATES PATENT oFFlcE.

WILLIAM S. GRAHAM, OF CANTON, ILLINOIS, ASSIGNOR TO INTERNATIONAL HAR- VESTER COMPANY, A CORPORATION OF NEW JERSEY.

IMPLEMENT BITCH.

Application led January 24, 1927. Serial No. 162,981.

This invention relates to implements shown in Figure 2. Each in'iplement also ada ted for operation with tractors and parcomprises a transversely extended frame 21 5 ticu arly to a multiple implement assembly which may be supported on transport or and draft means therefor. gauffe wheels 22. 'lhc forward of the two The mainl object of the invention is to implement frames is provided at its center provide an arrangement of implement frame with a short tongue 23 which is secured to units and draft means that will permit short one end of the cross bar through a seat 6o turns to be made when the assembly is be- 24 forming an integral part of the bearing ing pulled by a tractor Without occurrence bracket 19. At its inner end this implement 10 of side drag and without fouling or interframe has a second connection to the cross ference between the several implement units. bar 10 through a link 25 centrally connected Another object is to provide an arrangeto the cross bar and io a member 26 ex- 65 ment of implement units that will permit tending across the end of the implement operation over uneven ground and one in frame and projecting beyond it at both front Which the several units travel in parallel and rear. This implement frame is held in adjacent paths. fixed parallel relation to the cross bar 10.

Other minor objects and advantages will The second or rearwardly and laterally dis- 70 become apparent as the description of the posed implement has a long tongue 27 constructure comprising the invention proceeds. nected at its central portion which is seated Referring tc thc dmwings; in a second socket 21 similar in all respects Figure 1 is a, plan View showing the rear t0 that receiving the tongue 23 Of tlle first end or drawbar of a tractor with the assemmentioned implement. 'lhe bracket 19, of 75 bly of implement units hitched thereto, the which this socket 2-1 is a part, is pivoted dotted lines indicating the range cf hcrion a vertical axis to the end of the cross bar zontal swinging movement possible for one 10 by Ineens of a pivot bolt 28 passing of the implements; and through the tongue, bracket and bar. The

Figure 2 is a similar Side View, tongue 27 together with the bracket 19 is, 80

In the preferred embodiment 0f the i11- thelefOre, free t0 Swing laterally 011 bOlt 28. vention to be disclosed there is provided a Thls permits the rear offset implement unit 30 cross bar 10 having a central clevis 11 which t0 SWlng 111 an are behind and overlapping is hinged for vertical movement to the end he Path 0f the front implement unit, as cf a, draft; link 12, which is pivoted at 13 indlcated in Figure 1. In order to restrict 85 to the dragbar 14 of a tractor, the tracthe range of swinging movement of the reartion wheels of which are indicated at 15. Werd implement unit and prevent it from Preferably the cross bar 10 is braced t0 thc coming into contact with the front unit when drawbar 12 by means of diagonal links 16. a short turn to the right is made or swinging Caster Wheels 17 are provided for supporttoo far outwardly when a turn to the left 9e tingeach end of the cross bar 10 and these 1S made, there is provided a governing rod wheels have vertical standards 18 journaled 29, the inner end of Which is pivoted 1n an in bearing brackets 19 on each end of the aperture 30 formed 111 the Iell end 0f the cross bar. The cross bar 10, therefore, may bei' 26, and the outer portion of which is be regarded as a draft frame or member Slldbly Supported in an eye 31 projecting 95 which receives the pull of the tractor and f10m the Under Sllrfme 0f the tongue 27 at which is free to swing laterally on the traca pOlIlt near the rear end of said tongue.

tor with draft link 12 and may also pivot On the inner portion of rod 29 there is on the connection of clevis 11 with the link. JI'OVided an adjustable stop, such as a col- In the present embodiment of the invention al' and Set Screw 32, and a suitable stop is 100 two implements are shown as connected to also provided in the end of the bar, such as the drawbar 10. These are preferably ara cotter pin or a bolt 33. By suitably posiranged in rearwardly and laterally o'set tioning the stop collar 32, it can be made relation, as shown in Figure 1, and preferto engage the eye 31 in a manner to limit ably consist of rotary tillage implements the'swing of the tongue and should at all 105 such as gangs of overlapping rotary hoes 20, times be so set as to prevent the inner end of the rear implement frame from coming into contact with the forward implement frame.

It will be observed that the construction above described is one that is characterized by the fact that the double implement hitch provided has forward draft means pivoted Aon the tractor drawbar with which one of the implement frames moves as a unit, and other draft means pivoted to the first draft means with which the second implement moves or swings through a restricted arc; also by the fact that a flexible arrangement is provided which permits short turns of the tractor to which the implements are attached, without s ide drag on the implements or risk of the implements fouling one another or not-re suming their proper offset positions when forward travel is continued.

lVhile the above construction exemplifies the preferred form of the invention, it may be subjected to certain modifications without departure from the scope of the invention defined in the following claims.

What is claimed is:

l. A multiple implement assembly comprising the combination ofdraft means pivoted to a tractor drawbar for lateral movement, an implement having a frame tixedly connected to said draft means, a second implement having draft means pivoted to said lirst draft means for lateral swinging y. movement, said second implement being in rearwardly and laterally offset relation to the first implement, and means for governing the swinging movement of said second implement on its pivot comprising a rod connecting the implements and having an adj ustable sliding connection with one of them.

2. A double pulverizer unit assembly comprising the combination of a cross bar constituting a draft receiving means, ground engaging supports for said bar, a rotary implement having a laterally extended frame with a central tongue rigidly connected to one end of said cross bar, a second similar implement located in rearwardly and laterally offset relation to said first implement and having a central tongue pivoted to the other end of the cross bar for lateral swinging movement, and means for governing relative movement of said implements comprising a laterally projecting rod pivoted on one implement and slidably connected to the other and a stop on the rod for limiting the moven'ient of said implement.

3. A multiple implement assembly comprising the combination of a crossbar adapted for connection to a tractor, adjacent implements having extended frames in parallel relation to the crossbar, draft members connecting one of said frames in fixed relation to the crossbar, a draft tongue pivoted at its forward end to the cross bar and connecting the adjacent frame to the crossbar for lateral swinging movement, and means carried by the fixed frame and slidably engaging the swingable frame for limiting its movement to a predetermined arc.

In testimony whereof I affix my signature.

WILLIAM S. GRAHAM. 

